ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
EWR → STL
Newark to St Louis: 1,059 nonstop flights a year
On time (12 months)
84%
Cancelled
5.2%
avg delay 12 min
Best time to leave
Before 9 AM
90% on time vs 77% after 9 PM
Most reliable airline
Republic
80% chance on time
Lowest nonstop fare seen in the next two months: $150 (United 3485 on 2026-11-07). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Republic 3630 · sold as American Eagle, Delta Connection or United Express
9:00 AM → 10:44 AM2h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.9%
- Avg arrival delay
- 5 min
- Arrived on time 92% of the time (297 flights, Jun 2025 to May 2026).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Strong track record · 297 flights
Find 9:00 AM flight fares Opens this date on Aviasales#2 · Republic 3574 · sold as American Eagle, Delta Connection or United Express
2:47 PM → 4:43 PM2h 56m nonstop
Local times, typical schedule. Last flown 2026-04-29.
85%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 96% of the time (28 flights, Jun 2025 to May 2026).
- Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find 2:47 PM flight fares Opens this date on Aviasales#3 · Republic 3719 · sold as American Eagle, Delta Connection or United Express
3:00 PM → 5:00 PM2h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 86%
- Cancelled
- 6.2%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (241 flights, Jun 2025 to May 2026).
- Cancelled 6.2% of the time (16 of 257).
- Departs inside EWR's trouble window: 65% of its 259 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 241 flights
Find 3:00 PM flight fares Opens this date on Aviasales#4 · Republic 3468 · sold as American Eagle, Delta Connection or United Express
9:59 PM → 11:57 PM2h 58m nonstop
Local times, typical schedule. Last flown 2026-05-19.
76%
chance on time
- On time (history)
- 85%
- Cancelled
- 8.6%
- Avg arrival delay
- 8 min
- Arrived on time 85% of the time (149 flights, Jun 2025 to May 2026).
- Cancelled 8.6% of the time (14 of 163).
- Leaves in this route's least on-time window (After 9 PM: 77% on time; Before 9 AM: 90%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
Moderate track record · 149 flights
Find 9:59 PM flight fares Opens this date on Aviasales#5 · United 1527
10:07 PM → 11:35 PM2h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 77% on time; Before 9 AM: 90%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 1527 fares Opens this date on Aviasales#6 · Republic 3638 · sold as American Eagle, Delta Connection or United Express
9:47 PM → 11:51 PM3h 04m nonstop
Local times, typical schedule. Last flown 2026-03-28.
69%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 63% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 77% on time; Before 9 AM: 90%).
- Departs outside EWR's trouble window (1 PM to 7 PM, when 65% of its 259 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find 9:47 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)80%
937 flights · 85% on time as flown · 5.7% cancel
- United Airlines77%
122 flights · 74% on time as flown · 3.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
137 flights · avg delay 6 min
- 9 AM to noon89%
224 flights · avg delay 8 min
- Noon to 3 PM86%
195 flights · avg delay 11 min
- 3 to 6 PM87%
140 flights · avg delay 17 min
- After 9 PM77%
338 flights · avg delay 14 min
Best day: Monday (85%). Worst: Thursday (76%).
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure